Spring boot global transaction configuration

The abyss 2020-11-11 21:50:59
spring boot global transaction configuration


I found a lot of open source springBoot project , The use of transactions is Use it directly Business note . There is no global transaction configured .
In fact, at present, not new programmers think Transactions can only be controlled by adding solutions . Never heard of global transaction configuration .
Many global affairs on the Internet are not good enough . It's all copied back and forth . I really don't know if it can be used .
In fact, this is not good .

  1. When you write code, if you omit to add transaction annotations , It's terrible not to roll back that exception
  2. If you need to manually annotate when you write code , It's a lot of trouble . It's much easier to configure global transaction annotations .

Configuration code


package com.door.config;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.aop.Advisor;
import org.springframework.aop.aspectj.AspectJExpressionPointcut;
import org.springframework.aop.support.DefaultPointcutAdvisor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.TransactionDefinition;
import org.springframework.transaction.interceptor.*;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/** Global transaction control , Prevent omission Business note , In other words, there is no need to add transaction annotation in development */
@Configuration
@Aspect
public class TransactionConfig {
private static final int TX_METHOD_TIMEOUT = 60;
private static final String AOP_POINTCUT_EXPRESSION = "execution(* com.door..service..*(..))";
@Autowired private PlatformTransactionManager transactionManager;
@Bean
public TransactionInterceptor txAdvice() {
NameMatchTransactionAttributeSource source = new NameMatchTransactionAttributeSource();
RuleBasedTransactionAttribute readOnly = new RuleBasedTransactionAttribute();
readOnly.setReadOnly(true);
readOnly.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
// Don't use this kind of . This can lead to Read only transactions do not work . and Sure In the code Commit transaction 
// readOnly.setPropagationBehavior(TransactionDefinition.PROPAGATION_NOT_SUPPORTED);
RuleBasedTransactionAttribute required = new RuleBasedTransactionAttribute();
required.setRollbackRules(
Collections.singletonList(new RollbackRuleAttribute(Exception.class)));
required.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
// The unit is second 
required.setTimeout(TX_METHOD_TIMEOUT);
Map<String, TransactionAttribute> txMap = new HashMap<>(50);
txMap.put("add*", required);
txMap.put("save*", required);
txMap.put("insert*", required);
txMap.put("update*", required);
txMap.put("delete*", required);
txMap.put("create*", required);
txMap.put("init*", required);
txMap.put("submit*", required);
txMap.put("remove*", required);
txMap.put("edit*", required);
txMap.put("modify*", required);
txMap.put("batch*", required);
txMap.put("mass*", required);
txMap.put("handle*", required);
txMap.put("exec*", required);
txMap.put("import*", required);
txMap.put("set*", required);
txMap.put("get*", readOnly);
txMap.put("select*", readOnly);
txMap.put("list*", readOnly);
txMap.put("query*", readOnly);
txMap.put("find*", readOnly);
txMap.put("count*", readOnly);
txMap.put("page*", readOnly);
txMap.put("all*", readOnly);
txMap.put("*", readOnly);
source.setNameMap(txMap);
return new TransactionInterceptor(transactionManager, source);
}
// @Bean It's not good enough , Cannot configure rollback exception . In fact, and the way above The principle is the same .
// public TransactionInterceptor txAdvice() {
//
// DefaultTransactionAttribute txAttr_REQUIRED = new DefaultTransactionAttribute();
// txAttr_REQUIRED.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);
// txAttr_REQUIRED.setTimeout(TX_METHOD_TIMEOUT);
//
// DefaultTransactionAttribute txAttr_REQUIRED_READONLY = new DefaultTransactionAttribute();
// txAttr_REQUIRED_READONLY.setPropagationBehavior(
// TransactionDefinition.PROPAGATION_NOT_SUPPORTED);
// txAttr_REQUIRED_READONLY.setReadOnly(true);
//
// NameMatchTransactionAttributeSource source = new NameMatchTransactionAttributeSource();
// source.addTransactionalMethod("add*", txAttr_REQUIRED);
// source.addTransactionalMethod("save*", txAttr_REQUIRED);
// source.addTransactionalMethod("delete*", txAttr_REQUIRED);
// source.addTransactionalMethod("update*", txAttr_REQUIRED);
// source.addTransactionalMethod("exec*", txAttr_REQUIRED);
// source.addTransactionalMethod("set*", txAttr_REQUIRED);
//
// // source.addTransactionalMethod("get*", txAttr_REQUIRED_READONLY);
// // source.addTransactionalMethod("query*", txAttr_REQUIRED_READONLY);
// // source.addTransactionalMethod("find*", txAttr_REQUIRED_READONLY);
// // source.addTransactionalMethod("list*", txAttr_REQUIRED_READONLY);
// // source.addTransactionalMethod("count*", txAttr_REQUIRED_READONLY);
// source.addTransactionalMethod("*", txAttr_REQUIRED_READONLY);
//
//
//
// return new TransactionInterceptor(transactionManager, source);
// }
@Bean
public Advisor txAdviceAdvisor() {
AspectJExpressionPointcut pointcut = new AspectJExpressionPointcut();
pointcut.setExpression(AOP_POINTCUT_EXPRESSION);
return new DefaultPointcutAdvisor(pointcut, txAdvice());
}
}

TransactionDefinition.PROPAGATION_NOT_SUPPORTED Don't configure

This is how my colleagues used to configure , I haven't noticed before , Test today Read only transactions , It didn't work .
It can still be done in Method Write database operation , And there's no transaction control !!

source.setNameMap(txMap); And addTransactionalMethod It's the same principle

source.setNameMap(txMap); Source code Namely Cycle call addTransactionalMethod Method

A lot of searches are DefaultTransactionAttribute This code , It doesn't define Execption Exception type rollback

xml Global transaction configuration

Not used spring boot Old projects before development , Basic it is Use xml To configure global transaction interception

 <!-- Transaction configuration example -->
<aop:config proxy-target-class="true">
<aop:advisor advice-ref="txAdvice" pointcut="execution(* com.skg.crm.*.domain..*(..)) " />
</aop:config>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- about oracle Come on read-only="true" It didn't work ,
The rollback exception is configured to prevent Careless use of operation data, exception, no rollback .
If there is no operation data in the method and an exception occurs , Configuration rollback has no effect -->
<tx:method name="get*" read-only="true" rollback-for="java.lang.Exception" />
<tx:method name="is*" read-only="true" rollback-for="java.lang.Exception" />
<tx:method name="find*" read-only="true" rollback-for="java.lang.Exception" />
<tx:method name="query*" read-only="true" rollback-for="java.lang.Exception" />
<tx:method name="*" propagation="REQUIRED" read-only="false" isolation="DEFAULT" rollback-for="java.lang.Exception"/>
</tx:attributes>
</tx:advice>
<!-- Enable annotation support for transaction control ,proxy-target-class="true" Class agent is widely used -->
<!-- order There is no general configuration , If aop xml The transaction is configured , The code again uses transaction annotations , Well, it's mainly code annotations .
close order It is to prevent the code from being customized in the future AOP And that affects transaction annotations aop Abnormal transaction rollback of , Default transaction annotated aop Has the lowest priority .
Plus, it's also to tell you clearly spirng Declarative transaction annotations have the highest priority .
-->
<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" order="200"/>

Reference resources

Transaction configuration
Intercept point configuration

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